Improvement in peg-cutters



A. WHITTEMORE. Peg-Gutter.

Patented April 8,1879.

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NITED STATES PATENT Orrron.

AMOS VHITTEMORE, 0F GAMBRIDGEIORT, MASSACHUSETTS.

IMPROVEMENT IN PEG-CUTTERS.

Specification forming part of Letters Patent N0. 2111.072, dated AprilP, i879; application filed February 1, 1879.

To all whom it may concern:

Be it known that I, Aires Wnrr'rnnonn, of Gambridgeprt, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovement in Peg-Cutters;

vand I do hereby declare that the following is a full, clear, and exactdescription of vthe con.y

struction and operation ofthe saine, refeience.

being had -to the annexed drawings, makinga` part of this specication,and to the letters and figuresof reference marked thereon.

Figure lis a vertical section through the' I head-stock and a portion ofits tubular shaft,

taken in the co'urse of dotted line w,.Fig. 2,k showing the heads of thechain-rivets bearing on the licor of one of the channels.l Fi'g.`2 is afront view of the head-stock andi portion of the chain, the cap ofthestock being removed. Fig. 3 is a top view of the cutter, its guard,

' and a portion of the cap. Fig. 4 is an end view of the'lowerchain-wheel and a portion of the chain. Figs. 5 and 6 are enlargeddetails of the chain.

This invention relates to an improvement ou the peg-cutter for whichLetters Patent No. 209,7 84 were granted to me November 12 1878. In saidLetters Patent I described and illustrated a rotary cutter-h ead whichis driven by means of an endless chain passingaround chain-wheels, oneof which has a cutter-head 'rigidly secured to it. The endless chainmust pass from a vertical plane through a head- I stock which is at anobtuse angle to the vertircal plane, and this requires the chain to beelongated holes to receive said rivets, in combination with thechanneled inclined headstock of the peg-cutter, the chain-wheels, and arotary cutter-head,.as will be hereinafterexplained.

i In the annexed drawings, A designates the head-stock, and B a tubularshaft or standard,

on the upper end of which stock A is rigidly secured. The stock isarranged at an` obtuse angle to the standard, and constructed with aremovable cap, C, covering a circular recess, a, whichl terminates intwo curved channels, b b, separated by ya downwardly-convergingpartition, c. This partition is rounded laterally at its lower'enthfandit is perforated to receive lthe screws that secure cap C on the stock.

'.Inrtlie ,bottom of the recess a a hole is made to' receive. 'the lowerstud of a chain or sprocket-wheel, D; The upper stud or hub ofthe wheelI) has secured to it, in a suitable manner, one or more cutting bladesor leaves, d,

the cutting-edges of which may be straight or curved. Surrounding thecutter-head or cutting-blades d is a guard 0r shield, j', which maybescored at' suitable points; or it may be n'ade with openings through it,or in any other suitable manner. This guard or shield f is 4rigid on thecap C, and it prevents the cutters from injuring the leather whiletrinimingpegs in boots and shoes.

The ioors of the channels b b terminate at their lower ends in thediametrical plane of the shank of the head-stock, and a lower or drivingchain-wheel, E, is arranged in about the same plane. This wheel E iskeyed on a driving-shaft, F, which may turn in a vertically-adjustablebearing, as described in my lLetters Patent above referred to.

J designates an endless chain, which trans- Amits rotary motion fromwheel E directly to The plates forming the broad links g are secured toshouldered rivets i, which pass through oblong or enlarged holes madethrough the ends of the links h. The holes through links h are madelarge enough to allow the links to articulate sidewise while passinginto and from the head-stock, and while passing over the oors of thechannels b b.- For a similar reason the spaces between the broad-linkplates are greater than the thickness of the intermediate links orplates, h.

In order to prevent rapid wear of the rivets and the eyes of the linksh, the rivets i may he inclosed by tubes of copper or other suitablemetal, which tubes would form the shoulderabutments for the plates ofthe broad links; but I do not confine myself to the tubes.

It will be observed that the rounded ends e of the rivets i 0n the lowerside ot' the chainrest on the floors of the channels b b, and greatlyreduce friction which would be caused if the plates forming the links gdragged on said floors while passing through the hendstock A.

I do not claim, broadly, under this applica.- tion an endless chain forgiving n positive movement to the cut,ter-hcad, as l show in theschedule annexed to my Letters Patent No. 209,784, of November 12, 1878,an endless chain formed of loops.

The chain which I have now adapted tothe inclined headstock A is soconstructed that its plate-links will not drag over the oors of thechannels in the head-stock, owing to the bosses or knobs e. formed onthe rivets of the links i. Neither will this chain J stretch or fail toproperly mesh with the spurs on the chain-wheels D and E, which are inplaines at `right angles to each other. Neither will the described.

AMOS WHITTEMORE. Witnesses:

WILLiAM A. J AMES, EDGAR P. BAKER.

